I bought two cables, one for my iOptron ZEQ25GT mount and one for my classic Meade LX200 mount. Both worked great right out of the box and never caused any problems. I use these cables to control these mounts from Windows and Linux. No custom/dedicated drivers required. I haven't found any other straight USB to RS232 RJ9/12 cables that work with these brackets. You usually have to buy the official RS232 cables from Meade or iOptron and separately buy a USB to RS232 DB9 adapter which is more than twice the price overall of these unique straight cables and has a messy look. People asked me about these cables at the celebrity party and I sent them here. Highly recommended!